High-shock resistance polypropylene/polybutylene composite material as well as preparation method and purposes thereof
A technology of high-impact polypropylene and composite materials, applied in the field of polymer materials, can solve problems such as poor low-temperature impact resistance, large molding shrinkage, and easy aging, and achieve outstanding impact resistance and excellent compatibility. Effect
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Embodiment 1~3
[0032] The components and formulations provided in Table 1 (according to the percentage by weight, the following examples are all the same) weigh the materials, mix them in a high-speed mixer for 5 minutes, and extrude them in a twin-screw extruder with an aspect ratio of 45 and a diameter of 50 Pelletizing to obtain polybutene / polypropylene composite material. The polybutene used is homopolybutene, the isotacticity mmmm=90% of the NMR test, and its melt flow rate (190°C, load 2.16kg) is 5.5g / 10min; the polypropylene is impact polypropylene 8003, The isotacticity is 92%, the melt flow rate (230°C, load 2.16kg) is 13g / 10min, the flexural modulus is 1250MPa, and the impact strength is 60J / M. The temperature of each section of the extruder is: 180°C in the first zone, 200°C in the second zone, 200°C in the third zone, 230°C in the fourth zone, 230°C in the head, and a melt pressure of 17MPa.
[0033] The performance test results are shown in Table 2.
[0034] Components and for...
Embodiment 4~6
[0042] The components and formulations provided in Table 3 (according to weight percentage, the following examples are all the same) weigh the materials, mix them in a high-speed mixer for 5 minutes, and then process them in a twin-screw extruder with an aspect ratio of 45 and a diameter of 50 Extrusion granulation to obtain polybutene / polypropylene composite material. The polybutene used is isotacticity mmmm=78% homopolybutene in NMR test, its melt flow rate (190°C, load 2.16kg) is 0.8g / 10min; polypropylene is homopolypropylene, its melt flow rate is 0.8g / 10min; The bulk flow rate (230°C, load 2.16kg) is 20g / 10min, the flexural modulus is 1.4GPa, and the impact strength is 30J / M. The temperature of each section of the extruder is: 180°C in the first zone, 200°C in the second zone, 200°C in the third zone, 230°C in the fourth zone, 230°C in the head, and a melt pressure of 17MPa.
[0043] The performance test results are shown in Table 4.
[0044] From the test results in Ta...
Embodiment 7~8
[0050] The components and formulations provided in Table 5 (according to weight percentage, the following examples are all the same) weigh the material, mix it in a high-speed mixer for 5 minutes, and then use it in a twin-screw extruder with an aspect ratio of 45 and a diameter of 50 Extrusion granulation to obtain polybutene / polypropylene composite material. The polybutene a used is homopolybutene with isotacticity mmmm=91% in nuclear magnetic test, and its melt flow rate (190°C, load 2.16kg) is 0.8g / 10min; polybutene b is isotactic in nuclear magnetic test Homopolybutene with degree mmmm=63%, its melt flow rate (190°C, load 2.16kg) is 0.8g / 10min; polypropylene is copolymerized polypropylene EPF30R, its melt flow rate (230°C, load 2.16kg) kg) is 15g / 10min. The temperature of each section of the extruder is: 180°C in the first zone, 200°C in the second zone, 200°C in the third zone, 230°C in the fourth zone, 230°C in the head, and a melt pressure of 17MPa.
[0051] The perf...
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